Improvement in machines for making horseshoe-nails



i ZSheetS-SheefL J'. E. WHEELER, D. B. LORING- & F. W. COY.

MACHINES FOR MAKING HDR HOE-NAILS.

tented J`4111 y 3,1877.

2 sheets-sheen. J'. E. WHEELER, D. B. LORING & F. W. COY.

MACHINES FOR MAKING HoRsEsHoE-NAILS. No. 192,666. Patented July 3,1877..

NPE'ERS. PHOTQ-WHQGRAPHER. wAsMxNGT JQHN WHEELER OF LYr-NAND DAVID 13- LQll-NG AND BEDEBIGK W- eer, or costola, Massaceusnrms.

Specification forming part of lLetters Patent No. *92.666, dated July 3, V1877 appliatiqn iiled March 19, 1877.

To all whom it may concern Be it knownthat we, JOHN WHEELER, of Lynn, in the county of Essex, and DAVID B. Lennae-` and FREDER1oK W.Goy,both of fBoston, in the county of Suffolk, all `of the :State offMa-ssaehusetts, have'invented an Improvement inthe Manufacture of Horse-Nails,

`ofv` which the following,isla-specification:

This inventionhas for its object the following purposes: `First,`the lfeeding of blanks tothe dies, whichlinvolves the invention patented toi-said David B, Loring `NovemberZS,

l876,iand` is animprovement thereon, ywherechute orintothe tunnel in position-for an automatic delivery ytothe revolving dies.

We will explain the nature, construction,

`andoperation of `our invention by the aidfcfl the-accompanying.-drawingsforrninga part oi" vthis,specification, in whic Figure 1 is an elevation of our-machine.

wFigQQis a vertical section of the same. 4Fig. 3 is afplan. iFig. 4 is across-section of the delivery-tunnel on-the` line a' y of Fig. '1. Fig. 5 lis a sectional-view, showing `the construction -bywhichthe .cut-oft' is-operated. Figs. 6, i7,

andare, respectively, an elevation, averticalsection, and a plan-of our attachment pro- -vidin g a reservoir and an automatic feed from the same into the -inclined chute or tunnelV `hereinafter explained'. Figs.-9 and 1l0'relate --tothe construction of the rolls.

xCDhe-feed-tunnel A has'the automatic` guide .aand ,al arranged to-open and close horizontally between it and the rolls B. These guides ,are .operated by levers b and b', one of `.which (the operating-lever b) contacts-with the piu c projectingffrom the .disk c which is actuated by either kof the driving-shafts operating the rolls. The levier 'b is pivoted .at dto the frame Coil themachine, and `the lever b is pvoted to the frame at d. The arm e projecting from levert! and springein connection with each thickness of two.

across, or nearly across,the `feedwa'y of the tunnel through hole f1 in the tunnel. '.ll-.he

lever f2, upon whichithe regulator isiformed,

ispivoted to block g at g1, and it is operated ibypinc'and the spring githecontactofthe pin with the end of the lever opening thepassage in the tunnel, and the springclosingfthe same by constantly-bearing upon the lever, as shown;

` At the `top of `feed-tunnel A, and inclined sufficiently in relation to the `same to permit "blanks to-fall vinto the tunnelby their own gravity, is a feeding-chute, A'. y,This chute has arranged above and `behind it a detachable box, E, designed .to hold'a I argenumber of blanks arranged to lietherein on their sides one upon the other. The box `stands upon and is at the. end of a platform, El, iniwhi'c'h a flat plate, E2, is operated horizontally back and forth, to successively throw tlhe blanks which drop in the box into `its path `into the inclined chute A', thebox being openv at its lower end and resting .upon the sidesfof the platform, and the way in the platform into which `the blanksidrop being somewhat deeper than one blank, .but not as deep Vas A the Thebent lever E?, pivoted to the bracket E4, and the cam-projectionsxEf Vuponthe side of diskc,ioperate the platiElz, Which`is-l1eld in `place .by the upwardly-projecting sides ofthe platform.

- y Immediately below the point where the rolls diverge :is the springh, which is fastened to .the frame :of the machine, and .projects outward into the path of `the delivery-tunnel D,

then-inward and upward, and is bent rat ,its

`end to project through hole h' into the feedltunnel Abe'neathrthe" guides au. @he-delivlway D1 andl the screw-pin and lever lc.

2 magici;

ery-tunnel D is movable in the frame or ways D1 to and from the rolls, and is kept in position by means ofspring-pressure exerted upon the side of the tunnel, which produces suiicient friction to hold the tunnel when it is placed.

The spring pressure or friction which we employ is represented in Fig. 4, and consists of a plate, j, which forms part of the inner side of one of the ways D1, which is recessed to receive it, and also the sprin gs j1, which surround the pins jz, which project into the recess from its end, for the purpose of holding the springs in position. A bolt,j3, passing through a hole in the way D1, in which it may freely move, screws into plate j, and holds it in position against the pressure of the springs, which constantlyact to i'orce the plate outward from the way. 0f course, it will readily be seen that the degree of its projection beyond the inner side of the way may be regulated by the bolt j, and that it is intended to project the plate j sufficiently to get friction enough to hold the delivery-tunnel in any desired position when the same is in contact with the plate.

The face D2 of the tunnel we make removable, and hold the same in position by means of the recess between the plate D3 and the This construction insures a ready removal of the front-plate from the tunnel, and it is desirable that-the plate may be removed and replaced quickly, as the tunnel is sometimes clogged by an imperfect blank.

' rlhe rolls B are made, preferably, in three disk-like parts, and the central one B2 is provided with the projection o, which increases the bearing-surface of the disk on the shaft.

. The outer ones, B3, are recessed, as shown, to

it the projections. The shaft is provided with' a shoulder, against which the inner disk bears, and with a screw-thread at its end. rlhe three disks are keyed to the shaft and held in position by a nut screwed on the end of the shaft and the shoulder on the shaft.

By this construction die-grooves and recesses can more readily be made, and when a narrow central disk is used it is necessary to provide it with a greater bearing on the shaft, pronortionally, than that given the outer disks, so that the great strain which it receives may be distributed on a larger section of the shaft than would be the case were the disk of one thickness throughout. A llat thin disk cuts into the shaft unless it is provided with a sufcient bearing-surface.

The operation of our machine is as follows: The box E, iilled with blanks, is placed in position on the platform E1, and the blanks areI permitted to escape therefrom, successively, into the path of the reciprocating plate E2 by gravity. As one blank is forced from under the pile by the advance of the plate another falls into its place. From the box the blanks l feed or drop into the tunnel head first, and

their delivery to the rolls is regulated by the regulator j andthe guides a, a. The `blank next above the regulator is dropped on the guides a a by the opening of the regulator, and the regulator is quickly closed to prevent the descent of the following blank, the guides a a then open just before the dies B1 in the rolls B converge, and the head of the blank is dropped upon the rolls in position to be seized by the head-forming portion of the dies as they come together. Meanwhile the guides c a' have closed upon the shank of the blank, and the same is d-rawn vertically into the dies, being prevented from canting by the guides. The regulator above them then opens, and another blank is dropped on the guides in a position to be fed.

If the blank is perfectly rolled it drops through the delivery-tunnel. If, however, it is lodged in the die, it is necessary to stop the further feeding of blanks, and in operation the blank lodged in the die contacts with the top'of the delivery-tunnel, (whichshould be immediately below, and almost touching, the rolls when the machine is in operation,) and the same is forced downward, thereby liberatin g the spring h, which prevents any blanks from being delivered to the dies by the projection of it-s end into the tunnel below the guides a c. Upon the removal of the blank from the die the tunnel D is pushed` upward toward the rolls,its upper inner corner contacting with the spring h, pushing it back, and opening the tunnel for continued feeding. The advantages of our invention consist in the uniform and regular feed produced by the combination and operation of the regulator and guides, in connection with the tunnel, as set forth, in the method of operating a cut-off by the descent of the tunnel, in the employment of friction in holding the delivery-tunnel to the rolls, in the method of holding the front plate of the lower tunnel in position, and in providing for a continuous supply of blanks automatically from the box, whereby the machine is self-feeding.

We are aware that a divided detent has heretofore been used, and we do not specifically claim it; neither do we claim, in terms, the forked detent, as that is shown and claimed in the pending application of Wheeler and Loring, who are also applicants in this case.

Having thus fully described our invention,

we claim and desire to secure by Letters Patent of the United States- 1. In a horse-nail machine, the combination of the feed-tunnel A, provided with the guides a a and regulator f, with the revolving dies B1, substantially as shown, and for the purpose set forth.

2. The combination of a delivery-tunnel, held in relation to the revolving dies B1 by friction, with the spring h, arranged to project upward from the frame, and whose end operates asa cut-oli' in preventing the feeding of blanks to the rolls, substantially as shown and described.

3. The combination of the movable delivery- 199,666 i c si tunnel D, ways D1, one of which is recessed, as

shown, with plate j, springjl, and bolt jz, inclosed in said recess, all arranged to operate las described.

4; In a horse-nail machine, the combination of a movable delivery-tunnel, provided With a removable front plate, with the Ways D1 D2, where one of which is provided With a groove and the other with a screw-pin and lever, for the purpose of fastening the front plate in position, substantiallyias and for the purpose described.

5. The combination of the feed-tunnel A, automatic guides a a', regulator f, and inclined chute A', substantially as and for the purpose described.

6. In a horse nail machine, the combination of a feed-tunnel provided with the guides a a and regulator f, the revolving dies B1, and the movable delivery-tunnel D, and the spring h,

all arranged in relation to each other and operating substantially as described.

7. In a horse-nail machine, the combination of the disk c', provided with pin c, with the lever f2, pivoted as shown, spring g2, and lever b', arranged in relation to each other as set forth, whereby the regulator f and guides a a are successively operated, substantially as described. l

In a horse-nail machine, the combination of a removable box for holding blanks, provided With means for successively ejecting the undermost blank, a tunnel for conveying and 

